<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <title>表格的分区</title>
        <style>
        table,td{
            border-collapse: collapse;
        }
        td{
            width: 145px;
        }
    </style>
    </head>
    <body>
        <table border="1">
            <!-- 标题分区 -->
            <caption>各地区资产投资情况</caption>
            <!-- 表头分区 -->
            <thead>
                <tr>
                    <th rowspan="2">地区</th>
                    <th colspan="2">按总量分</th>
                    <th colspan="2">按比重分</th>
                </tr>
                <tr>
                    <th>自年初累计（亿元）</th>
                    <th>去年同期增长（%）</th>
                    <th>去年初累计（%）</th>
                    <th>去年同期（%）</th>
                </tr>
            </thead>
            <!-- 主体分区 -->
            <tbody>
                <tr>
                    <td>全国</td>
                    <td>234234.6</td>
                    <td>9.7</td>
                    <td>90</td>
                    <td>90</td>
                </tr>
                <tr>
                    <td>全国</td>
                    <td>234234.6</td>
                    <td>9.7</td>
                    <td>90</td>
                    <td>90</td>
                </tr>
                <tr>
                    <td>全国</td>
                    <td>234234.6</td>
                    <td>9.7</td>
                    <td>90</td>
                    <td>90</td>
                </tr>
                <tr>
                    <td>全国</td>
                    <td>234234.6</td>
                    <td>9.7</td>
                    <td>90</td>
                    <td>90</td>
                </tr>
            </tbody>
        </table>
    </body>
</html>